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Showing 1 to 20 of 52 for “"Radio sources"”.
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Asymmetries in extragalactic radio sources
… three dimensional hydrodynamics of extragalactic radio jets. This entailed putting together a large number of numerical tools before such simulations could be performed. The thesis was structured to be a set of papers, each addressing a computational or astrophysical issue that was important in …
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Multi-frequency studies of powerful radio sources.
… is concerned with the physics of extragalactic radio - sources. Radio observations of a given source provide a powerful method with which to make direct measurements of the physical processes occuring within the la~ge-scale radio lobes and hotspots . Multi-frequency observations with up to five …
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Extragalactic Radio Sources in Uniform Model Universes
Made available in DSpace on 2014-12-09T18:34:01Z (GMT). No. of bitstreams: 1 7013456.pdf: 2165188 bytes, checksum: 103532548393fa302ab35585d35fc7e3 (MD5) Previous issue date: 1969
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The Luminosity Function of Extragalactic Radio Sources
Made available in DSpace on 2014-12-05T20:51:49Z (GMT). No. of bitstreams: 1 6305138.pdf: 4472075 bytes, checksum: 7d669eae6b8c4bd5d7775f4188d48ae0 (MD5) Previous issue date: 1963
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Polarization Aperture Synthesis of Five Galactic Nonthermal Radio Sources
Made available in DSpace on 2014-12-10T19:06:59Z (GMT). No. of bitstreams: 1 7219846.pdf: 12190740 bytes, checksum: af81e02319027d4b75d7a4e81cae6eb8 (MD5) Previous issue date: 1972
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Identification of radio sources in the MG-VLA survey
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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The galaxy cluster environments of wide angle tail radio sources
Double-lobed radio sources result from high-speed plasma jets produced as matter accretes onto the central black hole within an elliptical galaxy. Those which display a characteristic jet-hotspot-lobe transition and possess an intermediate radio power are called Wide Angle Tail radio sources …
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Spectral characteristics of low-frequency variability in compact extragalactic radio sources
… fluctuations. Plane waves from extragalactic radio sources propagating through the interstellar medium, a medium with fluctuations of the refractive index due to electron density irregularities, emerge from that medium corrugated. Since fluctuations present on scales greater than the Fresnel …
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Compact and Extended Radio Sources Classification using Deep Convolutional Neural Networks
Upcoming surveys with new radio observatories such as the Square Kilometer Array will generate a wealth of imaging data containing large numbers of radio sources. Different classes of radio sources can be used as tracers of the cosmic environment, including the dark matter density field, to address …
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A statistical approach to automated detection of multi-component radio sources
Advances in radio astronomy are allowing for deeper and wider areas of the sky to be observed than ever before. Source counts of future radio surveys are expected to number in the tens of millions. Source finding techniques are used to identify sources in a radio image, however, these techniques …
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Observations of several discrete radio sources at 3.64 and 1.94 centimeters
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1967. Ph.D.
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Wideband spectropolarimetry of extragalactic radio sources with KAT 7 and commissioning phase MeerKAT
… understood. This work aims to use wide band radio polarimetry to probe the frequency dependent polarization properties in a small sample of unresolved known disc and AGN powered radio galaxies and also in a larger faint radio source sample from a deep blind survey. The second sample is …
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Characterising radio sources in the Small Magellanic Cloud using citizen science and optical spectroscopy
… wavelengths, revealing rich populations of radio sources within and beyond the nearby dwarf galaxy. With radio interfer-ometers' ever-increasing sensitivity and resolution, greater source populations will be discovered. Two regions of the SMC dwarf galaxy were observed using MeerKAT, with …
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The nature and evolution of I. extragalactic radio sources, and II. young stellar clusters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
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Bent tail radio sources as tracers of galaxy clusters at high redshift and SMBH mass estimates
Bent tail radio sources (BTRSs) are radio galaxies which have jets that show a characteristic C‐shape that is believed to be due to ram pressure caused by the motion of the galaxy through the ambient medium. They are generally found in galaxy clusters in the local Universe. They have already been …
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